Westport Showcases High‑Pressure CNG Fuel System for North American Heavy‑Duty Fleets at ACT Expo 2026

Westport recently announced the first North American demonstration of its compressed natural gas (CNG) fuel storage system combined with the on-engine HPDI^™ fuel system of Cespira, Westport’s joint venture with Volvo Group, at ACT Expo 2026, held May 4-7 in Las Vegas. These systems are installed on a latest-generation Volvo VNL 300 truck with 500 hp and 1,850 lb ft of torque, and with fuel efficiency on CNG closely comparable to the VNL running on diesel fuel.

Westport showcased the system in real‑world operation in a demonstration truck.

Westport’s high‑pressure (~700 bar) CNG platform is engineered for diesel combustion engines that require in‑cylinder, high‑pressure gaseous fuel injection, including engines equipped with the HPDI fuel system developed by Cespira. While HPDI is commercially available in more than 30 countries, powering over 10,000 trucks worldwide using liquefied natural gas (LNG), North America’s preference for CNG has limited adoption in this market. Westport’s new fuel storage system removes that barrier.

The HPDI fuel system has the unique ability to be applied and certified to run on a variety of different fuels with minimal hardware changes, including natural gas, hydrogen or a blend of both fuels. OEMs can integrate NG HPDI in the near term. Unlike fuel cells, an engine equipped with the HPDI fuel system does not require hydrogen to be 99.999% pure.

This means hydrogen for HPDI-equipped engines does not need a dedicated, super-clean distribution system and can avoid the high cost of liquefying hydrogen and transporting it in cryogenic trailers.

Source: Westport

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